It's bizarre, Lookleft, that you refer to your experiences of hearing about the hole in the ozone layer and the Y2K bug as reasons you think you should ignore experts working in the field and treat climate science as an overblown hysterical scam. In both those cases large numbers of experts working in the field gave their advice, just as climate scientists are doing now, and based on that action was taken to resolve them with widespread public action and laws. The hole in the ozone layer is shrinking now because regulators, governments and the general public listened to the scientists and meteorologists working in the field, and laws were changed to virtually eliminate the production and use of CFCs that depleted the ozone layer. Result - a diminishing hole in the ozone layer, that is recovering gradually. Regarding the Y2K bug, a significant number of IT experts put in vast amounts of time and effort to prepare legacy systems for the Y2K issues, so at the turn of the century there were minimal impacts - again, action based on the recommendations of large numbers of highly qualified experts in the field. Just because it wasn't visible within your personal experience doesn't mean it didn't occur.
How many of the active pilots here would be happy to have an atmospheric physicist with no aviation experience wander into their flight deck and explain how the pilots are getting everything wrong based on the physicist having read some blogs and listened to some radio commentators? But when the reverse is happening, there's a few people who claim to be pilots here who love to explain to the experts how they are getting everything wrong in climate science, based on having no formal qualifications in the field but reading a few websites and listening to a few radio hosts.
Whether that has anything to do with on time performance at Sydney is another thing entirely...there are plenty of other things I can think of to improve that particular bottleneck in Australia's aviation infrastructure, but it can certainly be a useful distraction for an airline executive who has his bonuses linked to on time performance.